Support for tillermen&#39;s seats



Aug. 26, 1930.

' c. BOHLEN, JR

SUPPORT FOR TILLERIIIPS SEATS Filed July 3, 1929 2 Sheets-Sheet 1 Aug. 26, 1930.

c. aoHLEN, JR 1,774,194 SUPPORT FOR TILLERIERS SIATS Filed July 3, 1929 2 Sheets-Sheet 2 k1 1f J be j: 1 5f.

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y 18a/wm ou zarldnhlm, Kw @M0/IM z Patented Aug. 26, 1930 PATENT oem-CE if g CHARLES BonLENfJR, oF NEW YORK,V N. Y.; AssIGNoR To INTERNATIONAL MoToR COMPANY, .0F NEWYQRK, N. Y.,-A CORPORATION-0F DE1:,.AwA1-taV f Y sPPoRT Non TI'LLERMENS SEATS Appiicationaled my 3, 192e. sel-iai No. 375,687.

The' present invention relates to seat constructions and supports therefor and embodies, more specifically, an improved formV of tillermans seat for use on trailers which fcarry fire'ladders. v v I 1 In service of this character the trailer is quite long andthe rear truck thereof is a considerable distance from the fifthwheel connection between the `tractor and the trailer. In order to facilitate the manoeuvering ofthe vehicle, the rear truck is constructed in lsuch manner that it may be steered and the tlllerman or person steering the rear truck is Yseat-l ed directly over the truck and in back of the steering wheel therefor. In this manner, the

tillerman is located directly above the lad- `der which lies in the median line of the trailerv and must be removedbefore theladder can be elevated. It becomes quiteldesirable, therefore, to provide a tillermans seat support which is readily movable into steering position, as wellas being capable of movement out-lofV the elevation thereof.

' An object of the present invention, accordingly, is to provide a support for aftillermans seat which may be'readily moved into a steering position as welly as into a position out of the path of the ladder during elevation thereof.

A further obj ect ofthe invention is to providea means for automatically preventingy elevation of the ladder while the kseat -Ais in asteering position. f I v' A further objectY ofthe invention 'is to provide a mechanismwhich when released,

causes the'seat to be Ymoved immediatelytd path of theladder dur- Y a position out of the Ving its elevation.

40 Further objects ofthe invention will be apparent as it is described in greaterv detail 1n connection with the accompanying drawings,.wherein: l v

Figure l is a view in front elevation, taken in section through the lire vladder and trailer frame and showingy thek seat support constructed in -accordance with the present invention. Y

Figure 2 is a View in section, takeny on line path of the 'ladder duringI` 24-2'of Figure 1,'and looking in the direction ofthe arrows.

Figure 3 is a View in section, taken Online -v 83 of Figure 1, and looking in the direction of the arrows'. 'f

1 Figure 4 isa view in section taken on line t-tof Figure 1, vand looking in the direction of the arrows.

Referring to theabove drawings, a designates the frame members of a trailer carrying ladder sections Zn land c. A cross frameV member wiserves as a brace and a bracket d is secured to the left hand frame member a and cross member a as clearly shownxin Figure l. This bracket carries a stationary pedestal e upon thevupper end of whicha jaw e is secured. Thelower jawV member is `formed with alsloping face e2 tof serve as a O'uide for the extremityof across armA f formed on a seat pedestal f. The arm f carries the tillermans seatrg and, as describedy above, rides yup over the lower jaw member' and is-latched in the position shownin Figure 3 by a spring actuated detent e3 which'is part of the jaw member e5. Spring e4 is mounted within a handle ,formed on the jaw member e5 which is pivotedto the jaw mem-l ber e at'ee. The detent iscarried in the lower i downwardly by the spring 614. l

Upon the right handframe member a, a`

extremity of,v the handle e5' and is urged bracket 72, issecured, the bracket being. formed i i with a pedestal support I/ which is .internalvly, threadedk at its upper extremityV 7b2, and

formed with an inwardly yextending annular shoulder h3 adjacent the lower extremityl thereof. A A bearing plug h4 is threaded in the upper'extremity of the pedestal support and a bearing plug 21,5, having an annular ange 72,6, 1s carried within the pedestal support at the lower extremity thereof, the any nular flange it?` being seated upon the shoulder, 71,3- as clearly shown in Figure 2. A

- squared section la? isformedv on the plug in orderthat a tool may be applied to turn the plug `with respect to the bearing support h.

The bearing plug h5 is formed with an axialrecess its within whichthe lower extremity-of the seat pedestal f is received. Ahelical spring z' is secured at itsv upper end to the pedestal f, while the lower end 2 is secured to the bearing plug h5. Radial recesses hg are formed in the flange he and plug 7i is threaded in the pedestal support to engage a suitably positioned recess 71,9 upon turning of the bearing plug to the proper position. In 4this manner, the tension of the spring t' may be adjusted as desired. VVhen the arm f with seat g are moved out of the path of the ladders, the seat pedestal j is held-r the seat pedestal by means of a bolt 7c and is .position From the foregoing description,l

formed with a ange 7a2 having a recess 703. The manner in which the latch isoperated will be readily apparent since the latch member will engage the recess 7c3 automatically when the seat is moved into a plane parallel with the median plane of the ladders.

The ladders are elevated by power delivered by the engine for propelling the tractor. In order that the ladders may not be elevated while the seat is in a steering` position, an automatic safety device has been incorporated in the structure forsupporting the seat. T his safety device comprises a means for cutting olf the engine ignition should theladders be elevated while the seat 1s so disposed. Referring to Figure l, the engine magneto is i diagrammatically shown at Z, being connected through circuit 7 to a ground Z2. A stationary switch contact m and a movable contact m are interposed in this magneto ground circuit and carried by a bracket m2 which is mounted on the rotatable pedestal Stationary contact m is mounted on an arm m3,'

whileinovable contact m is carried by an arm m4 which 1s pivoted upon the bracket m2. An operating arm m5 is formed on the arm m4 andv lies in the path of the ladder section b when the seat is in the position shown in Figure l. Under these conditions, contacts m and m are open and the ground is removed from the magneto. If the ladder section b is elevated before the tillerinans seat g is moved outof the path of the ladder, the ladder section 79 engages operating arm m5 and closes contacts m and m to ground the magneto,thus shutting off the power and preventing further elevation of the ladder until the tillermans seat is moved intoI a non-steering it will be seen that theinvention includes, not only an improved formy of tillermans seat support which affords means for holding the seat in either a steering or non-steering position, but there is incorporated in the seat structure an auxiliary safety device for preventing injury to the parts by reason of the elevation of the ladder before the seat is moved into a non-steering position. The spring i normally urges the seat into a nonsteering position, thus requiring only the releasing of latch e3, to eect such operation positively and the seat is maintained in such position by the latch j. lt thus requires positive manual operation to move the seat into a steering position although, when there, the seat is held by the latch e3. v

While the inventionhas been described in connection with the specific construction shown in the accompanying drawings, it is not to be limited, save as defined in the appended claims.

l claim as my invention:

l. ln combination with a magneto grounding circuit, a rotatable pedestal for a tillermans seat, and an elevating ladder, a bracket carried by the pedestal, a stationary contact carried by the bracket and connected in the circuit, an arm pivoted to the bracket and eX- tending in the path of the ladder, and a movable contact on the arm and connected in the circuit, whereby elevation of the ladder when the seat is in a normal position will close the contacts to groundutlie magneto.

2. ln combination with an electrical circuit, a rotatable seat pedestal and a means movable through the position normally occupied by the seat, a bracket carried by the pedestal, a stationary co-ntact carried by the bracket and connected in the electrical circuit, a pivoted arm carried bythe bracket and lying in the path of the movable means, and a contact on the arm connected in the electrical circuit and cooperating with the first contact to close the circuit upon movement of the movable means when the seat Vis in a normalposition.

3. ln combination with an electrical circuit, a rotatable seat pedestal and a means movable through the position normally occupied by the seat, a bracket carried by the pedestal, a stationary contact carried by the bracket and connected in the electrical circuit, a movable contact carried by the bracket and connected in the circuit, and means to position the movable contact in the path of the movable means.

This specification signed this 28th day of June, A. D. 1929.

CHARLES BGHLEN, JR. 

